Method and apparatus for cutting extruded materials on movable container type metal extruding press



Dec. 26, 1967 AKlRA ASARl 3,359,770

METHOD AND APPARATUS FOR CUTTING EXTRUDED MATERIALS ON MOVABLE CONTAINERTYPE METAL: EXTRUDING PRESS Filed June 28, 1965 4 Sheets-Sheet l Ame/1 A5A R/ Inventor A ttorn y Dec. 26, 1967 AKlRA ASARI 3,359,776

METHOD AND APPARATUS FOR CUTTING EXTRUDED MATERIALS ON MOVABLE CONTAlNERTYPE METAL EXTRUDING PRESS 4 Sheets-Sheet 2 Filed June 28, 1965 Ak/KAA?! Inventor Attorney Dec. 26, 1967 AKlRA ASARI 3,359,770

METHOD AND APPARATUS FOR CUTTING EXTRUDED MATERIALS ON MOVABLE CONTAINERTYPE METAL EXTRUDING PRESS Filed June 28, 1965 4-SheetsSheet 3 A /(//F/1l M n Inventor A ttorney Dec. 26,

1967 A AKIRA ASARI METHOD AND APPARATUS FOR CUTTING EXTRUDED MA ONMOVABLE CONTAINER TYPE METAL EXTRUDING PRESS Filed June 28, 1965 Ala/PAA 54/21 Inventor By V/VQ Attorney United States Patent 3,359,770 METHODAND APPARATUS FOR CUTTING EX- TRUDED MATERIALS 0N MOVABLE CON- TAINERTYPE METAL EXTRUDING PRESS Akita Asari, Asahi-ku, Osaka, Japan, assignorto Kobe Steel Ltd'., Fukiai-ku, Kobe, Japan Filed June 28, 1965, Ser.No. 469,366 Claims priority, application Japan, June 29, 1964, 39/37,140 3 Claims. (Cl. 72-255) ABSTRACT OF THE DISCLOSURE A metalextruding press of the type having a plurality of billet containersattached to a holder which moves the containers seriatim to an extrusionstation, has heretofore required holding of the container at theextrusion station during severing of the extruded material from theremnant. The present disclosure avoids the delay of so doing byarranging for movement of the extruded metal with the container from theextruding station and for severing the extruded metal from the remnantduring such movement.

This invention relates to a novel method and apparatus for cutting anextruded material upon the completion of extrusion on a movablecontainer type metal extruding press having a plurality of billetcontainers attached to a single container holder so adapted that themovement of said container holder will cause the respective containersto be moved one after another toward the center axis of extrusionthereby providing for the extrusion of metal.

The extruding of metal in the form of a billet requires various workingsteps ranging from the charging of billets to the cleaning of the innersurface of each container. Therefore, if it is so arranged that thesesteps are separately performed at the respective container positions ofthe extruding press having a plurality of containers, the press cyclewill be considerably reduced. However, in order that the extrudedmaterial alone, not together with the extrusion remnant, may be pulledforwardly of the container after previously cutting the-m apart, thecutting of the extruded material must be performed on the center axis ofextrusion, whereby the reduction of the working steps performed on thecenter axis of extrusion is consequently limited.

With the view of reducing the working steps performed on the center axisof extrusion, the invention provides a method of cutting extrudedmaterials comprising the steps of causing the extruded material tofollow the movement of the container by the utilization of the movementof the container holder occurring at the end of extrusion, and cuttingsaid extruded material by a stationary cutting machine in the course ofits movement in a directional normal to the direction of extrusion.According to this method, since the extruded material is cutsimultaneously with the movement of the container holder, the Workingtime on the center axis of extrusion is correspondingly reduced.

An apparatus used for carrying out the method according to the inventionis characterized in that an opposed frame sustaining the extrusion forceis formed with an elongated opening extending in a direction parallel tothe movement of the container holder, the extruded material being causedto be moved together with the container holder along said elongatedopening, and the cutting blade of a stationary cutting machine ispositioned adjacent the elongated opening so that the extruded materialis cut by the cutting blade during the movement of the extruded3,359,770 Patented Dec. 26, 1967 material. The use of this apparatusmakes it possible to embody the cutting method of the inventioneffectively.

The invention will now be described in more detail with reference to apreferred embodiment thereof shown in the accompanying drawings, inwhich:

FIG. 1 is a sectional plan view of an apparatus taken along the centeraxis of extrusion;

FIG. 2 is a longitudinal section of the same;

FIG. 3 and FIG. 4 are sectional views taken along lines IIIIII andIV--IV in FIG. 1, respectively; and

FIG. 5 is a longitudinal section of the apparatus with a container inits retracted position.

In FIG. 1, the extruding part of a metal extruding press is shown. Acontainer holder 1 is adapted to be rotatable around the axis of a shaft2 in a vertical plane and has a plurality (four in the illustratedexample) of containers 3a, 3b, 3c and 3d attached to the outer peripherythereof, the rotation of said holder causing the containers to besuccessively brought into alignment with the central axis of extrusionC. The driving of the holder 1 may be effected by a hydraulicallyoperated rack 21 through an associated pinion 22 (FIG. 2). A die holder5.for receiving a die 4 is shown as attached to the front surface ofeach container. But such die holders 5 may, of course, be separated fromthe containers so as to be capable of varying their positions andholding a plurality of dies. In the center axis of extrusion C, there isprovided in front of the die 4 a wedge'7 vertically reciprocated as by asuitable hydraulic means as shown in FIG. 3, the vertical'reciprocationof said wedge being controlled by vertically arranged guides 9, 9. Thewedge 7 is provided with an inverted U-shaped opening 10 directeddownward. An opposed frame 8 is positioned in front of the containerholder and serves to sustain the extrusion force, said frame 8 beingmounted on a frame 11. The opposed frame 8 is provided with an arcuateelongated opening 12 with its arcu-ate axis extending transversely ofthe center axis of extrusion C along an arc AA described by the centerof each container when rotated by the container holder 1. Thus, one endof the elongated opening will horizontally align at the center axis ofextrusion C with the opening 10 in the Wedge 7 when the latter is in itslowered position, as shown in FIG. 3. Provided in front of the opposedframe 8 so as to be rotatable around the axis of a shaft 15, is agear-shaped carrier block 14 having a number of longitudinally extendinggrooves 13 formed in the outer periphery thereof. The carrier block 14maybe of the freely rotatable type, or it may be driven synchronouslywith the container holder 1. The angle between adjacent grooves 13 inthe carrier block 14 corresponds to the length of the elongated opening12. Further, a suitable driving means 17 is attached to the frame 11 sothat a cutting saw 16 may be positioned in a vertical plane at a shortdistance ahead of the dies 4 with the blade of the saw overlapping theadjacent terminal end portion of the elongated opening 12. Thepositional relation between the elongated opening 12 and the blade ofthe saw 16 as viewed from front is as shown in FIGS. 4 and 5.

In operation of the invention, use being made of a movable typecontainer holder and the container 3a being located at the center axisof extrusion C and having been charged with a billet 18, a stem 19presses the billet so that the latter is forwardly extruded through thedie 4 supported by the wedge 7, the thus extruded material 20 beingpassed through the elongated opening 10 in the wedge 7 and then throughthe initial end portion of the elongated opening 12 in the opposed frame8 into the upper groove 13 in the carrier block 14. Upon the completionof extrusion, the container is retracted in a suitable degree, as shownin FIG. 5, whereupon the wedge 7 tion. The extruded materialthuscut isforwardlydrawn outialong the groove 13 in thecarrier block 14, while theextrusion remnant in the die 4 is suitably discharged therefrom.Thereafter, the above-mentioned extruding and cutting operations arerepeated.

From the foregoing description, it is understood that according to theinvention after the completion of each extrusion operation, the extrudedmaterial together with the, containeris moved in'a direction normal tothe direction of extrusion, during which movement the extruded materialis cut and separated 'from'the extrusion remnant, so thatrnoadditionaltime is required for cutting the extruded material and,therefore, the cycle of extrusion is correspondingly reduced therebyincreasing the efliciency of'extru'sion..Further, according to theinvention, since the cutting machine used is of the stationary type, anadditionaladvantage isobtained. in that unlike a conventional movabletype cutting machine, there is no need of providing complicatedmechanisms.

What'I'clairn is:

1. A method of cutting extruded materials on a mov-' the completion ofeach operation of extrusion towardthecenter axis of extrusion to effectthe next extrusion, the

extruded material being out between it and the extrusion remnant; saidmethod being characterized by the steps of (a) moving the container,with extruded material extending therefrom, in a direction normal to thedirection of extrusion, and (b) cutting 'the extrusion from thecontainer and the remnanttherein during. the movement Jbeing impartedthereto by step (a).

2. An apparatus for cutting extruded'materials-On a movable containertype metalextrudingpress, comprising an opposed frame positioned infront of a rotatable container holder having a plurality of containers,said opposed frame being, formed with an elongated opening extendingtransversely of the central axis of extrusion along an arc coincidingwith the locus described by the rotation of said container, and astationary cutting machine mounted in a fixed position in such a mannerthat the cutting blade thereof overlaps the terminal end portion of saidelongated opening.-

3. An apparatus as claimed in claim 2 wherein a gearshaped carrier blockhaving a plurality of longitudinally extending grooves is rotatablyarranged in front of said frame.

References Cited RICHARD L'HERBST, Primary Examiner.

K. C. DECKER, Assistant Examiner.

Great Britain.

1. A METHOD OF CUTTING EXTRUDED MATERIALS ON A MOVABLE CONTAINER TYPEMETAL EXTRUDING PRESS, WHEREIN USE IS MADE OF A PRESS HAVING A PLURALITYOF CONTAINERS ATTACHED TO A CONTAINER HOLDER, SAID CONTAINERS BEINGMOVED AFTER THE COMPLETION OF EACH OPERATION OF EXTRUSION TOWARD THECENTER AXIS OF EXTRUSION TO EFFECT THE NEXT EXTRUSION, THE EXTRUDEDMATERIAL BEING CUT BETWEEN IT AND THE EXTRUSION REMNANT, SAID METHODBEING CHARACTERIZED BY THE STEPS OF (A) MOVING THE CONTAINER, WITHEXTRUDED MATERIAL EXTENDING THEREFROM, IN A DIRECTION NORMAL TO THEDIRECTION OF EXTRUSION, AND (B) CUTTING THE EXTRUSION FROM THE CONTAINERAND THE REMNANT THEREIN DURING THE MOVEMENT BEING IMPARTED THERETO BYSTEPS (A).